PLL Frequency Detector: Difference between revisions
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Implements a PLL which locks to the input frequency and outputs an estimate of that frequency. Useful for FM Demod. | |||
This PLL locks onto a [possibly noisy] reference carrier on the input and outputs an estimate of that frequency in radians per sample | |||
== Parameters == | == Parameters == | ||
(''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span> | (''R''): <span class="plainlinks">[https://wiki.gnuradio.org/index.php/GNURadioCompanion#Variable_Controls ''Run-time adjustable'']</span> | ||
; | ; Loop bandwidth (''R'') | ||
: | : The loop bandwidth determines the lock range and should be set around pi/200 2pi/100. | ||
; | ; Max freq | ||
: | : Maximum frequency of the carrier in radians per sample | ||
; Min freq | |||
: Minimum frequency of the carrier in radians per sample | |||
== Example Flowgraph == | == Example Flowgraph == | ||
[[File:Pll_freqdet_simple.png]] | |||
PLL Freq Det can be used to detect the frequency of a (noisy) single tone. | |||
This minimal demo does nothing than allow the user to adjust a Signal Source's frequency, and then estimate the same. | |||
== Source Files == | == Source Files == |
Revision as of 15:32, 9 April 2021
Implements a PLL which locks to the input frequency and outputs an estimate of that frequency. Useful for FM Demod.
This PLL locks onto a [possibly noisy] reference carrier on the input and outputs an estimate of that frequency in radians per sample
Parameters
(R): Run-time adjustable
- Loop bandwidth (R)
- The loop bandwidth determines the lock range and should be set around pi/200 2pi/100.
- Max freq
- Maximum frequency of the carrier in radians per sample
- Min freq
- Minimum frequency of the carrier in radians per sample
Example Flowgraph
PLL Freq Det can be used to detect the frequency of a (noisy) single tone.
This minimal demo does nothing than allow the user to adjust a Signal Source's frequency, and then estimate the same.
Source Files
- C++ files
- TODO
- Header files
- TODO
- Public header files
- TODO
- Block definition
- TODO